题干

汽车进入某海底隧道时,需要选择正确的照明方式以确保行车安全.汽车大灯通常有两种照明方式﹣﹣“远景照明”和“近景照明”,且“远景照明”时大灯的功率较大.如图所示是某汽车大灯的灯泡示意图,A和B是灯泡内的2条灯丝.通过开关S分别与触点“1”或“2”连接,使灯丝A或B工作,以改变照明方式.已知灯泡的额定电压为12V,灯丝A的电阻阻值为RA=1.2Ω,灯丝B的电阻阻值为RB=1.6Ω,电源电压U保持12V不变.则当开关S与触点“2”接通时,汽车大灯处在 ____(选填:“近景”或“远景”)照明方式.此时照明灯的功率为 ____W


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近景,90

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    The iPhone, the iPad: each of Apple's products sounds cool and has become a fashion. Apple has cleverly taken advantage of the power of the letter “i” --- and many other brands are following suit. The BBC's iPlayer --- which allows Web users to watch TV programs on the Internet ---used the title in 2015. A lovely bear --- popular in the US and UK --- that plays music and video is called “iTeddy”. A slimmed-down version(简装本) of London's Independent newspaper was started last week under the name “i”.

    In general, single-letter prefixes(前缀) have been popular since the 1990s, when terms like e-mail first came into use.

    Most “i” products are aimed at young people and considering the major readers of independent's “i”, it's no surprise that they've selected this fashionable name.

    But it's hard to see what's so special about the letter “i”. Why not use “a”, “b”, or “c” instead? According to Tony Thorne, head of the Language Center at King's College, London, “i” works because its meaning has become ambiguous. When Apple uses “i”, no one knows whether it means Internet, information, individual or interactive, Thorne told BBC Magazines. “Even when Apple created the iPod, it seems it didn't have one clear definition,” he says.

    “However, thanks to Apple, the term is now connected with portability (轻便) .”adds Thorne.

    ※Clearly the letter “i” also agrees with the idea that the Western World is centered on the individual. Each person believes they have their own needs, and we love personalized products for this reason.

    Along with “Google” and “Microblog”, readers of BBC Magazines voted “i” as one of the top 20 words that have come to define the last ten years.

    But as history shows, people grow tired of fashions. From the 1900s to 1990s, products with “2000” in their names became fashionable as the year was connected with all things advanced and modern. However, as we entered the new century, the fashion disappeared.